How to remove unlock button.
I took them pic's for you.
Sorry, The quality is not too good, I had to use my phone camera. Could not find my other camera.
This should give you a rough idea as to how to remove the button.
Get a flat head screwdriver and pry the trim up like this.
Then from there, Lift the trim up like so
Then lift the trim out of the groove like so
Same for the bottom.
Then flip the bottom trim out.
Now start to pry up the other side.
Seperate the trimming like so
Now start sepertaing the top trim
Once you have got the trim removed on all sides, Seperate the materail from around the button like so
Pop the button thrugh the foam.
Seperate the plastic from the foam.
Now you will be able to see the lock mecinism.
To remove the button, There is a clip here(top)
And here(bottom)
Once you got the clip's undone, Slide it upward.
It will slide right off the pin
Getting it back together is just the oppisite of what you did.
The trim slot's back into the groove, Just press it in, It will clip back in.
Woohaa that was a task and a half..sorting them out..
With a half asleep concentration level...
And that's how you remove the centre seat button.
Hope that help's you a bit.
Sorry for the poor quality, Hope you can follow it ok.